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Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of restricted cash and escrows existing as of the balance sheet date. Award Date [Axis] Award Date [Axis] Schedule of Revenue and Net Operating Income, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Area of real estate property (in sq ft) Area of Real Estate Property Tenant receivables Lessor, Operating Lease, Account Receivable Net of Allowance for Doubtful Accounts Lessor, Operating Lease, Account Receivable Net of Allowance for Doubtful Accounts Adjustment to Compensation, Amount Adjustment to Compensation Amount Unamortized discounts and debt issuance costs Unamortized discounts and debt issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Principles of Consolidation Consolidation, Policy [Policy Text Block] Stock compensation expense Share-Based Payment Arrangement, Noncash Expense Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Intangible lease liabilities, accumulated amortization Below Market Lease, Accumulated Amortization Deferred Stock Award, Granted February 23, 2023 Deferred Stock Award, Granted February 23, 2023 [Member] Deferred Stock Award, Granted February 23, 2023 Grantee Status [Domain] Grantee Status [Domain] Piedmont stockholders’ equity Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Compensation expense related to stock awards Share-Based Payment Arrangement, Expense Common stock, shares authorized (in shares) Common Stock, Shares Authorized Debt, net Notes Payable, Fair Value Disclosure Goodwill and Intangible Assets Disclosure [Abstract] Secured debt Secured Debt Assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Total liabilities and stockholders’ equity Liabilities and Equity Cover [Abstract] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Property Dispositions and Assets Held for Sale Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Maximum Maximum [Member] Net income applicable to noncontrolling interest Net income applicable to noncontrolling interest Net income applicable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Accounting Policies [Abstract] Intangible lease assets, less accumulated amortization of $77,271 and $73,824 as of March 31, 2026 and December 31, 2025, respectively Finite-Lived Intangible Assets, Net Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Gain on sale of real estate assets Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Total Grant Date Fair Value of Deferred Stock Vested During the Period Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Other income Other Income (Expense) Amount of income (expense) classified as other Liabilities: Liabilities [Abstract] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Entity Shell Company Entity Shell Company Proceeds from debt Proceeds from Issuance of Debt Capitalized expenditures Payments for Tenant Improvements, Capital Improvements, and to Develop Real Estate Assets Payments for Tenant Improvements, Capital Improvements, and to Develop Real Estate Assets Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] 2026 impairment charges Goodwill, Impairment Loss Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Schedule of Certain Non-cash Investing and Financing Activities Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Effective portion of gain/(loss) on derivative instruments that are designated and qualify as cash flow hedges (See Note 4) Amount of loss recognized in OCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Comprehensive loss applicable to Piedmont Comprehensive Income (Loss), Net of Tax, Attributable to Parent Disposal Group Name [Domain] Disposal Group Name [Domain] Name Measure Name Secured Debt Secured Debt [Member] Document Fiscal Period Focus Document Fiscal Period Focus Unsecured Debt Unsecured Debt [Member] Award Timing Method Award Timing Method [Text Block] Award Type [Axis] Award Type [Axis] Number of interest rate derivatives terminated Number of Interest Rate Derivatives Terminated Number of Interest Rate Derivatives Terminated Total/Weighted Average Long-Term Debt Total assets Assets $400 Million Unsecured Senior Notes due 2033 $400 Mllion Unsecured Senior Notes due 2033 [Member] $400 Mllion Unsecured Senior Notes due 2033 Trading Symbol Trading Symbol Stock awards vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Stock Awards Stock Awards [Member] Stock Awards [Member] Geographical [Domain] Geographical [Domain] Northern Virginia/Washington, D.C. Northern Virginia/Washington D.C. [Member] Northern Virginia/Washington D.C. Income Taxes Income Tax, Policy [Policy Text Block] Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Entity Address, City or Town Entity Address, City or Town Cash Flows from Operating Activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Receivable Type [Axis] Receivable Type [Axis] Buildings and improvements, less accumulated depreciation of $1,321,935 and $1,278,600 as of March 31, 2026 and December 31, 2025, respectively Investment Building and Building Improvements, Net Investment Building and Building Improvements, Net Other Segment Items Segment Reporting, Other Segment Item, Amount Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Emerging Growth Company Entity Emerging Growth Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Changes in assets and liabilities: Increase (Decrease) in Operating Assets [Abstract] $600 Million Unsecured Senior Notes due 2028 $600 Million Unsecured Senior Notes Due2028 [Member] $600 Million Unsecured Senior Notes Due2028 Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Restricted cash and escrows Restricted Cash and Cash Equivalent Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] $325 Million Unsecured 2024 Term Loan $325 million Unsecured 2024 Term Loan [Member] $325 million Unsecured 2024 Term Loan Common stock, shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding PEO PEO [Member] Total shares issued to employees, directors, and officers (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] $400 Million Unsecured Senior Notes due 2029 $400 Million Unsecured Senior Notes due 2029 [Member] $400 Million Unsecured Senior Notes due 2029 Derivative Instruments and Hedging Activities Disclosure [Abstract] Cumulative Distributions in Excess of Earnings Retained Earnings [Member] Accounts payable, accrued expenses and accrued capital expenditures Accounts Payable and Accrued Liabilities Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Effective rate (percent) Debt Instrument, Interest Rate, Effective Percentage Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Share-Based Payment Arrangement [Abstract] Cash, cash equivalents, and restricted cash and escrows, beginning of period Cash, cash equivalents, and restricted cash and escrows, end of period Total cash, cash equivalents, and restricted cash and escrows as presented in the accompanying consolidated statement of cash flows, beginning of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Deferred Stock Award, Granted February 20, 2024 Deferred Stock Award, Granted February 20, 2024 [Member] Deferred Stock Award, Granted February 20, 2024 Collectibility of Tenant Reimbursements Collectibility of Tenant Reimbursements [Member] Collectibility of Tenant Reimbursements [Member] Unsecured debt, net of unamortized discount and debt issuance costs of $21,806 and $23,368 as of March 31, 2026 and December 31, 2025, respectively Unsecured Debt Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] $197 Million Fixed Rate Mortgage Fixed Rate Secured Mortgage Note [Member] Fixed Rate Secured Mortgage Note Product and Service [Domain] Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Net loss Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Discontinued Operations and Disposal Groups [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Deferred Stock Award, Granted February 17, 2026 Deferred Stock Award, Granted February 17, 2026 [Member] Deferred Stock Award, Granted February 17, 2026 Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Gross derivative assets Interest Rate Cash Flow Hedge Asset at Fair Value Interest costs capitalized Interest Costs Capitalized Schedule of Debt Instruments [Table] Schedule of Debt Instruments [Table] Schedule of Debt Instruments [Table] Unvested and potential stock awards, beginning of period (in shares) Unvested and potential stock awards, end of period (in shares) Unvested shares (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Commitments and Contingencies Disclosure [Abstract] Cash Flows from Investing Activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative General and administrative expenses General and Administrative Expense Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Disposal Group, Disposed of by Sale, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Maximum extension period (in years) Debt Instrument, Maximum Maturity Extension Period Debt Instrument, Maximum Maturity Extension Period NOI Total NOI Net Operating Income Revenues and expenses directly related to real estate rental operations Goodwill Goodwill, beginning balance Goodwill, ending balance Goodwill Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Depreciation Depreciation Depreciation Equity Components [Axis] Equity Components [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Trade Accounts Receivable Trade Accounts Receivable [Member] Number of reportable segments Number of Reportable Segments New York New York, NY [Member] New York, NY Summary of Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Accumulated impairment charges Accumulated impairment charges Goodwill, Impaired, Accumulated Impairment Loss Other Performance Measure, Amount Other Performance Measure, Amount Debt issuance and other costs paid Payments of Debt Issuance Costs Entity Address, State or Province Entity Address, State or Province Dividends to common stockholders and stockholders of subsidiaries Dividends, Common Stock 750 West John Carpenter Freeway 750 West John Carpenter Freeway [Member] 750 West John Carpenter Freeway Derivative Instrument [Axis] Derivative Instrument [Axis] Individual: Individual [Axis] Vesting [Axis] Vesting [Axis] Liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Dividends paid Payments of Ordinary Dividends, Common Stock Additional paid-in capital Additional Paid in Capital, Common Stock Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Amount of previously recorded gain/(loss) reclassified from OCI into interest expense Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net Deferred Stock Award, Granted October 28, 2024 Deferred Stock Award, Granted October 28, 2024 [Member] Deferred Stock Award, Granted October 28, 2024 Document Fiscal Year Focus Document Fiscal Year Focus Number of term extensions Debt Instrument, Number Of Term Extensions Debt Instrument, Number Of Term Extensions Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Deferred Stock Awards Deferred Stock Award [Member] Deferred Stock Award [Member] Entity Interactive Data Current Entity Interactive Data Current Other Segments Other Operating Segment [Member] Carrying Value Reported Value Measurement [Member] Unrecognized compensation cost related to nonvested, weighted-average vesting period Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Real estate assets, at cost: Real Estate [Abstract] Change in estimated potential share award based on TSR performance (in shares) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Change In Estimated Potential Share Award Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Change In Estimated Potential Share Award Schedule of Outstanding Employee Deferred Stock Awards Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] Risk Management Objective of Using Derivatives Derivatives, Policy [Policy Text Block] Segment Information Segment Reporting Disclosure [Text Block] Goodwill [Table] Goodwill [Table] Redevelopment Asset Redevelopment Asset [Member] Redevelopment Asset [Member] Area of land Area of Land Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Deferred lease costs, accumulated amortization Deferred Costs, Leasing, Accumulated Amortization Weighted Average Weighted Average [Member] Other amortization Amortization of Intangible Assets Orlando Orlando, FL [Member] Orlando, FL Entity Central Index Key Entity Central Index Key PEO Name PEO Name Total revenues Total Revenues Revenues Intangible lease liabilities, less accumulated amortization of $36,885 and $35,036 as of March 31, 2026 and December 31, 2025, respectively Below Market Lease, Net Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Supplemental Cash Flow Elements [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Arrangement Duration Trading Arrangement Duration Year 1 Share-Based Payment Arrangement, Tranche One [Member] Segments [Axis] Segments [Axis] Increase in prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Stock Based Compensation Share-Based Payment Arrangement [Text Block] Assets held for sale, sale price Disposal Group, Including Discontinued Operation, Consideration Assets: Assets [Abstract] Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Vesting [Domain] Vesting [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Fair Value Measurement of Financial Instruments Fair Value Disclosures [Text Block] Loss on early extinguishment of debt Loss on early extinguishment of debt Total amount of loss on early extinguishment of debt presented in the consolidated statements of operations Gain (Loss) on Extinguishment of Debt Credit Facility [Domain] Credit Facility [Domain] Stockholders’ Equity: Equity, Attributable to Parent [Abstract] Boston Boston, MA [Member] Boston, MA Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Vesting percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Entity Address, Address Line One Entity Address, Address Line One Deferred Stock Award, Granted October 01, 2024 Deferred Stock Award, Granted October 01, 2024 [Member] Deferred Stock Award, Granted October 01, 2024 Decrease in interest expense over the next twelve months Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Accumulated Other Comprehensive Income/(Loss) AOCI Attributable to Parent [Member] Stated rate Debt Instrument, Interest Rate, Stated Percentage Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Land Land Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Fair Value as of Grant Date Award Grant Date Fair Value Entity Registrant Name Entity Registrant Name Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Disposal Group, Held-for-sale, Not Discontinued Operations Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] Stock awards granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Total expenses Costs and Expenses Unrecognized compensation cost related to nonvested Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $300 Million Unsecured Senior Notes due 2030 $300 Million Unsecured Senior Notes due 2030 [Member] $300 Million Unsecured Senior Notes due 2030 Document Quarterly Report Document Quarterly Report Costs of issuance of common stock Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Number of operating segments Number of Operating Segments Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Schedule of Debt Schedule of Debt [Table Text Block] Stock awards granted (in dollars per share) Weighted-average grant date fair value per share of deferred stock granted during the period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Prepaid expenses and other assets Prepaid Expense and Other Assets Restatement Determination Date: Restatement Determination Date [Axis] Shares issued and amortized under the 2007 Omnibus Incentive Plan, net of tax Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Non-PEO NEO Non-PEO NEO [Member] Net derivative liability Interest Rate Cash Flow Hedge Derivative at Fair Value, Net Schedule of Interest Rate Derivatives Schedule of Interest Rate Derivatives [Table Text Block] Deferred lease costs paid Increase (Decrease) in Lease Acquisition Costs Land Land [Member] Property management fee revenue Management Service [Member] Name Trading Arrangement, Individual Name Award Type [Domain] Award Type [Domain] Goodwill Goodwill Disclosure [Text Block] Noncontrolling interest Equity, Attributable to Noncontrolling Interest Equity Awards Adjustments Equity Awards Adjustments [Member] Other property related income Real Estate, Other [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Other income Other Income Compensation Amount Outstanding Recovery Compensation Amount Debt instrument, face amount Debt Instrument, Face Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Statement of Comprehensive Income [Abstract] Change in accrued dividends Increase (Decrease) In Dividends Payable Increase (Decrease) In Dividends Payable Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Estimated Fair Value Estimate of Fair Value Measurement [Member] Variable payments Variable Lease, Income MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name Unvested and potential stock awards, beginning of period (in dollars per share) Unvested and potential stock awards, end of period (in dollars per share) Grant date fair value (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Shares-in-trust, shares authorized (in shares) Shares In Trust Authorized Shares In Trust Authorized Segment Reporting, Other Significant Reconciling Item [Line Items] Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Revenues: Revenues [Abstract] Shares-in-trust, shares outstanding (in shares) Shares In Trust, Outstanding Shares In Trust, Outstanding Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Houston Houston, TX [Member] Houston, TX Goodwill gross, beginning balance Goodwill gross, ending balance Goodwill, Gross Financial Instruments [Domain] Financial Instruments [Domain] Performance Share Program Award, Granted February 6, 2026 Performance Share Program Award, Granted February 17, 2026 [Member] Performance Share Program Award, Granted February 17, 2026 Segments [Domain] Segments [Domain] Schedule of Derivative Instruments, Effect on Other Comprehensive Income Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Award Date [Domain] Award Date [Domain] Management fee revenue Revenue From Contract With Customer, Net Of Related Operating Expenses Revenue From Contract With Customer, Net Of Related Operating Expenses Performance Share Awards Performance Shares [Member] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Minus: Reclassification of net loss/(gain) included in net loss (See Note 4) Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Amortization of debt issuance costs inclusive of settled interest rate swaps Amortization of Debt Issuance Costs and Discounts Minimum Minimum [Member] Company Selected Measure Name Company Selected Measure Name Fair Value Measurement [Domain] Fair Value Measurement [Domain] Debt Debt Disclosure [Text Block] Preferred stock, no par value, 100,000,000 shares authorized; none outstanding as of March 31, 2026 or December 31, 2025 Preferred Stock, Value, Issued Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] All Executive Categories All Executive Categories [Member] Common stock, $0.01 par value, 750,000,000 shares authorized; 125,019,003 and 124,519,278 shares issued and outstanding as of March 31, 2026 and December 31, 2025, respectively Common Stock, Value, Issued Goodwill [Roll Forward] Goodwill [Roll Forward] Share-Based Payment Arrangement, Employee Share-Based Payment Arrangement, Employee [Member] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Year 2 Share-Based Payment Arrangement, Tranche Two [Member] Weighted-average common shares outstanding – diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Commitments and Contingencies (Note 7) Commitments and Contingencies Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Derivative [Table] Derivative [Table] Entity Small Business Entity Small Business Costs of issuance of common stock Payments of Stock Issuance Costs Change in accrued deferred financing costs Increase (Decrease) in Accrued Deferred Financing Costs Increase (Decrease) in Accrued Deferred Financing Costs Schedule of Equity Based Award Activity Schedule of Nonvested Share Activity [Table Text Block] Non- controlling Interest Noncontrolling Interest [Member] Atlanta Atlanta, GA [Member] Atlanta, GA Reductions in reimbursement revenues Loss Contingency, Loss in Period Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Document Transition Report Document Transition Report Underlying Securities Award Underlying Securities Amount Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Contractual obligation Contractual Obligation Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] $300 Million Unsecured Senior Notes due 2032 $300 Million Unsecured Senior Notes due 2032 [Member] $300 Million Unsecured Senior Notes due 2032 Total stockholders’ equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Document Type Document Type Earnings Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Loss Contingencies [Table] Loss Contingencies [Table] Product and Service [Axis] Product and Service [Axis] Derivative Contract Type [Domain] Derivative Contract [Domain] Property management fee revenue and other property related income Revenue from Contract with Customer, Excluding Assessed Tax All Individuals All Individuals [Member] Performance Share Program Award, Granted February 20, 2024 Performance Share Program Award, Granted February 20, 2024 [Member] Performance Share Program Award, Granted February 20, 2024 Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Fair Value Disclosures [Abstract] Extension term Debt Instrument, Extension Term Debt Instrument, Extension Term Name Forgone Recovery, Individual Name Statistical Measurement [Axis] Statistical Measurement [Axis] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Weighted average rate (percent) Debt, Weighted Average Interest Rate Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Disposal Group Name [Axis] Disposal Group Name [Axis] Value of shares withheld for payment of taxes related to employee stock compensation Payment, Tax Withholding, Share-Based Payment Arrangement Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] 161 Corporate Center 161 Corporate Center [Member] 161 Corporate Center Gain on sale of real estate assets Gain on sale of real estate assets Gain (Loss) on Sale of Properties Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Accounts payable and accrued expenses Accounts Payable, Fair Value Disclosure Other comprehensive income/(loss) Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Geographical [Axis] Geographical [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Level 1 Fair Value, Inputs, Level 1 [Member] Net loss applicable to common stockholders - diluted (in dollars per share) Earnings Per Share, Diluted Depreciation and amortization Cost, Depreciation and Amortization Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Title of 12(b) Security Title of 12(b) Security Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Changes in accrued capital expenditures and deferred lease costs Increase (Decrease) In Accrued Capital Expenditures And Deferred Lease Costs Net change in the balance of accrued lease acquisition costs and accrued capital expenditures during the period. These accrued costs consist of items such as leasing commissions, lease incentives, procurement fees, tenant improvements, and/or general building improvements. Dividends to stockholders of subsidiaries Adjustments to Additional Paid in Capital, Dividends in Excess of Retained Earnings Other comprehensive income/(loss): Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Per share information – basic and diluted: Earnings Per Share [Abstract] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Percentage leased Real Estate Property, Percent of Property Under Lease Percentage of Leased Real Estate Properties Consolidation Items [Domain] Consolidation Items [Domain] Total other income (expense) Nonoperating Income (Expense) Dallas Dallas, TX [Member] Dallas, TX Change in estimated potential share award based on TSR performance (in dollars per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Estimated Potential Share Award, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Estimated Potential Share Award, Weighted Average Grant Date Fair Value Minneapolis Minneapolis, MN [Member] Minneapolis, MN Number of unrecorded tenant allowance commitment Number Of Unrecorded Tenant Allowance Commitment Number Of Unrecorded Tenant Allowance Commitment Decrease in deferred income Increase (Decrease) in Contract with Customer, Liability Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table] Segment, Reconciliation of Other Items from Segments to Consolidated [Table] Amortization Amortization of Deferred Charges Award Timing Disclosures [Line Items] Amount outstanding, gross Long-Term Debt, Gross Property operating costs Direct Operating Costs Net loss applicable to Piedmont Net loss applicable to Piedmont Net loss applicable to Piedmont Net Income (Loss) Attributable to Parent Schedule of Fixed and Variable Lease Payments Operating Lease, Lease Income [Table Text Block] Expiration Date Trading Arrangement Expiration Date Interest rate swaps Gross derivative liabilities Interest Rate Cash Flow Hedge Liability at Fair Value Construction in progress Construction in Progress [Member] Total real estate assets Real Estate Investment Property, Net Fixed payments Operating Lease, Lease Income, Lease Payments Award vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Adoption Date Trading Arrangement Adoption Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Increase in tenant and straight-line rent receivables Increase (Decrease) in Accounts Receivable Entity Current Reporting Status Entity Current Reporting Status Derivative [Line Items] Derivative [Line Items] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Real estate assets held for sale, net Real Estate, Held-for-Sale Line of Credit Line of Credit [Member] Financial Instrument [Axis] Financial Instrument [Axis] Statement of Financial Position [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Executive Category: Executive Category [Axis] Repayments of debt Repayments of Debt Current Fiscal Year End Date Current Fiscal Year End Date Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Weighted-Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Statement [Table] Statement [Table] Adjustments to reconcile net loss to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash Flows from Financing Activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cumulative distributions in excess of earnings Accumulated Distributions in Excess of Net Income Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Performance Share Program Award, Granted February 3, 2025 Performance Share Program Award, Granted February 3, 2025 [Member] Performance Share Program Award, Granted February 3, 2025 Deferred income Contract with Customer, Liability Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Net shares granted (in shares) Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Net Shares Granted The number of share grants, net of shares surrendered for taxes, made on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). All Adjustments to Compensation All Adjustments to Compensation [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Amendment Flag Amendment Flag Sales proceeds from wholly-owned properties Proceeds from Sale, Real Estate, Held-for-Investment Termination Date Trading Arrangement Termination Date Net cash provided by/(used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Schedule of Amounts Held For Sale and Assets Held for Sale Disclosure of Long-Lived Assets Held-for-Sale [Table Text Block] Receivable [Domain] Receivable [Domain] Year 3 Share-Based Payment Arrangement, Tranche Three [Member] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Weighted-average common shares outstanding – basic (in shares) Weighted Average Number of Shares Outstanding, Basic Straight-line rent receivables Deferred Rent Receivables, Net Supplemental Disclosures for the Statement of Consolidated Cash Flows Cash Flow, Supplemental Disclosures [Text Block] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Segment Reporting [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Other income (expense): Nonoperating Income (Expense) [Abstract] Entity Tax Identification Number Entity Tax Identification Number Share-Based Payment Arrangement, Nonemployee Share-Based Payment Arrangement, Nonemployee [Member] Grantee Status [Axis] Grantee Status [Axis] Number of real estate properties Number of Real Estate Properties Interest paid Interest Paid, Including Capitalized Interest, Operating and Investing Activities Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares issued (in shares) Common Stock, Shares, Issued Use of Estimates Use of Estimates, Policy [Policy Text Block] Construction in progress Construction in Progress, Gross Schedule of Goodwill Schedule of Goodwill [Table Text Block] Interest expense Total amount of interest expense presented in the consolidated statements of operations Interest expense Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Rental and tenant reimbursement revenue Total Rental and Tenant Reimbursement Revenue Operating Lease, Lease Income Loss Contingencies [Line Items] Loss Contingencies [Line Items] Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Insider Trading Arrangements [Line Items] Other Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] Security Exchange Name Security Exchange Name Total liabilities Liabilities Deferred Stock Award, Granted February 3, 2025 Deferred Stock Award, Granted February 3, 2025 [Member] Deferred Stock Award, Granted February 3, 2025 Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Expenses: Operating Expenses [Abstract] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Tenant improvements funded by tenants Increase (Decrease) in Tenant Improvements Funded By Tenants Increase (Decrease) in Tenant Improvements Funded By Tenants $600 Million Unsecured 2022 Line of Credit $600 Million Unsecured 2022 Line of Credit [Member] $600 Million Unsecured 2022 Line of Credit Year 4 Share-based Compensation Award, Tranche Four [Member] Share-based Compensation Award, Tranche Four [Member] Statement [Line Items] Statement [Line Items] Consolidation Items [Axis] Consolidation Items [Axis] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalent Common  Stock Common Stock [Member] Stock awards vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Buildings and improvements, accumulated depreciation Real Estate Investment Property, Accumulated Depreciation Real estate assets held for sale, net: Disposal Group, Including Discontinued Operation, Assets Held For Sale [Abstract] Disposal Group, Including Discontinued Operation, Assets Held For Sale Net increase/(decrease) in cash, cash equivalents, and restricted cash and escrows Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Deferred Stock Award, Granted May 15, 2025 Deferred Stock Award, Granted May 15, 2025 [Member] Deferred Stock Award, Granted May 15, 2025